Gauge-and-compass migration: inherited magnetic headings and signposts can adapt to changing geomagnetic landscapes DOI Creative Commons
James D. McLaren, Heiko Schmaljohann, Bernd Blasius

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2022, Volume and Issue: unknown

Published: July 2, 2022

Abstract Background For many migratory species, inexperienced (naïve) individuals reach remote nonbreeding areas independently using one or more inherited compass headings and, potentially, magnetic signposts to gauge where switch between headings. Inherited magnetic-based orientation programs have not yet been assessed as a population-level process, particularly strong geomagnetic spatial gradients long-term shifts could create mismatches with In particular, it remains unstudied whether and how, under natural selection, potentially adapt shifts. Methods To address these unknowns, we modelled bird migration an evolutionary algorithm incorporating global data (1900-2023). Modelled population mixing incorporated both natal dispersal trans-generational inheritance of signposts, the latter including intrinsic (stochastic) variability. Using model, robustness signposted non-signposted trans-hemispheric songbird across rapidly magnetically-shifting Nearctic breeding region (mean 34° declination shift) via Europe Africa. Results Model-evolved magnetic-signposted was (i) overall successful throughout 124-year period, 60-90% mean arrival broad range in plausible precision, (ii) through reduced trans-Atlantic flight distances, up twice compared migration, but (iii) avoid evolving unsustainable open-ocean flights, variability required (model-evolved σ ≈ 2.6° standard error headings). Conclusions Our study supports potential viability illustrates generally how can mediate constrain evolution routes, response environmental change.

Language: Английский

Avian migration clocks in a changing world DOI Creative Commons
Barbara Helm, Miriam Liedvogel

Journal of Comparative Physiology A, Journal Year: 2024, Volume and Issue: 210(4), P. 691 - 716

Published: Feb. 2, 2024

Abstract Avian long-distance migration requires refined programming to orchestrate the birds’ movements on annual temporal and continental spatial scales. Programming is particularly important as typically anticipate future environmental conditions. Hence, has long been of particular interest in chronobiology. Captivity studies using a proxy, shift nocturnality during seasons (i.e., migratory restlessness), have revealed circannual circadian regulation, well an innate sense direction. Thanks rapid development tracking technology, detailed information from free-flying birds, including annual-cycle data actograms, now allows relating this mechanistic background behaviour wild. Likewise, genomic approaches begin unravel many physiological pathways that contribute migration. Despite these advances, it still unclear how programmes are integrated with specific conditions experienced journey. Such knowledge imminently environments undergo anthropogenic modification. Migratory birds group not dealing changes, yet some species show remarkable adjustments at behavioural genetic levels. Integrated research interdisciplinary collaborations needed understand range responses change, more broadly, functioning timing under natural

Language: Английский

Citations

7
The importance of migratory drop-off for island colonization in birds DOI Creative Commons
Paul Dufour, Ferran Sayol, Rob Cooke

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2021)

Published: April 17, 2024

Seasonal migration is an underappreciated driver of animal diversification. Changes in migratory behaviour may favour the establishment sedentary founder populations and promote speciation if there sufficient reproductive isolation between populations. From a systematic literature review, we here quantify role drop-off—the loss behaviour—in promoting birds on islands. We identify at least 157 independent colonization events likely initiated by species that led to speciation, including 44 cases among recently extinct species. By comparing, for all islands, proportion island endemic derived from drop-off with potential colonizers, showed seasonal has larger effect richness than direct dispersal. also found increases geographic Furthermore, success depends part biogeographic ecological factors, positively associated greater range size flock sizes. These results highlight importance shifts process calls consideration distribution birds.

Language: Английский

Citations

6
Yellow-browed Warbler (Phylloscopus inornatus) DOI

Steven G. Mlodinow,

Peter Clement,

Peter Pyle

et al.

Birds of the World, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Language: Английский

Citations

0
Conservation‐focused mapping of avian migratory routes using a pan‐European automated telemetry network DOI Creative Commons
Lucy J. Mitchell, Vera Brust, Thiemo Karwinkel

et al.

Conservation Biology, Journal Year: 2025, Volume and Issue: unknown

Published: March 24, 2025

Accelerated biodiversity loss has destabilized functional links within and between ecosystems. Species that cross different ecosystems during migration breeding nonbreeding sites are particularly sensitive to global change because they exposed various, often ecosystem-specific, threats. Because these threats have lethal nonlethal effects on populations, many migratory species declining, making this group especially vulnerable change. To mitigate their decline, research at a continental flyway scale is required adequately monitor changes in the demographic processes of populations all parts annual cycle. The Motus Wildlife Tracking System (Motus) could provide solution data gaps exist for small, species. an automated telemetry system animal tracking uses single very-high-frequency radio signal track tagged individuals. can information movements made by individuals small migrant species, thereby aiding understanding aspects affect parameters. Conservation-focused opportunities related include identification critical stopover support connect multiple insight into decisions birds environmental stressors, such as artificial light night. Examples studies from existing network demonstrate its utility high-conservation-value area blackpoll warbler (Setophaga striata) eastern United States. Geographical across Mediterranean region Europe need be filled continent-wide movements. individual-level variety small-bodied taxa, drive expand will improve ability direct conservation plans

Language: Английский

Citations

0
Origins of Nearctic migratory landbird vagrants recorded in Europe revealed by feather isotopic analysis DOI Creative Commons
Paul Dufour, Kevin J. Kardynal, Keith A. Hobson

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: May 2, 2025

Understanding the occurrence of vagrant individuals away from their usual distribution range can shed light on animal navigation systems. In autumn, migratory Nearctic landbirds often occur as far Western Europe, and while link between these occurrences wind conditions over Atlantic Ocean is largely established, drivers natal origins transatlantic vagrants remain elusive. We conducted feather hydrogen isotopic (δ2Hf) analyses 72 representing 26 landbird species captured in Azores (Portugal), Iceland France last century to infer likely origins. While potential several came northeastern populations (e.g., Blackpoll Warbler, Northern Parula), we also found that some originated northwestern American Redstart, Gray-cheeked Thrush) or southern (Yellow-billed Cuckoo) populations. Our results confirm migrating along coast undertaking over-water flights are more be displaced. However, they show even southeast towards eastern North America have displaced across Ocean. Further research needed fully understand vagrancy events determine whether only factor push off intended course. Overall, this study sheds broad geographic transoceanic implications for colonization new regions.

Language: Английский

Citations

0
Novel genetic association with migratory diapause in Australian monarch butterflies DOI Creative Commons
William Hemstrom, Micah G. Freedman, Myron P. Zalucki

et al.

BMC Ecology and Evolution, Journal Year: 2025, Volume and Issue: 25(1)

Published: May 7, 2025

Language: Английский

Citations

0
The evolutionary history of “suboptimal” migration routes DOI Creative Commons
Staffan Bensch, Violeta Caballero‐López, Charlie K. Cornwallis

et al.

iScience, Journal Year: 2023, Volume and Issue: 26(11), P. 108266 - 108266

Published: Oct. 20, 2023

Migratoriness in birds is evolutionary labile, with many examples of increasing or decreasing migration distances on the timescale modern ornithology. In contrast, shifts to more nearby wintering grounds seem be a slow process. We examine history how Palearctic migratory landbirds have expanded their ranges include both tropical Africa and Asia, process that has involved major routes. found species shorter resident populations often winter Asia. Our results suggest changes are not by long-distance migrant per se, but through historic intermediate were less from which evolved secondarily. The failure migrants shift direction quarters indicates modifications program may difficult evolve.

Language: Английский

Citations

3
Bird migration research today: some achievements and new challenges DOI Open Access
Nikita Chernetsov

Proceedings of the Zoological Institute RAS, Journal Year: 2023, Volume and Issue: 327(4), P. 607 - 622

Published: Dec. 25, 2023

This review deals with the topics of bird migration research that have seen significant progress in recent years. In these fields, earlier views been significantly re-considered. They include manifestation migration, i.e. length migratory flights, their speed, duration stopovers, flight altitude, which taken together form spatio-temporal realization migration. New data on this array questions make it possible to ask new about physiological adaptations such flights possible, and factors govern processes. Significant is also evident study long-distance orientation navigation migrating birds. However, mainly concerns mechanisms magnetoreception use magnetic cues for orientation. Besides, students could not ignore ‘-omics’ revolution, which, like studies was caused by technological advances, advent next generation sequencing techniques. The obtained methods raised hope sort out genetic basis endogenous control gap between expectations actual results remains. To close gap, into molecular cellular underlie behavior necessary. available now refer processes are relatively well understood, energy turnover stress response.

Language: Английский

Citations

2
Glacial legacies in bird migrations DOI
Ian Newton

Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown, P. 501 - 522

Published: Jan. 1, 2024

Language: Английский

Citations

0
Transatlantic vagrancy in northern South America: eight Old World bird taxa new to French Guiana DOI Open Access

Paul Lenrumé,

Olivier Claessens,

Quentin d’Orchymont

et al.

Bulletin of the British Ornithologists Club, Journal Year: 2024, Volume and Issue: 144(2)

Published: June 3, 2024

We document the first records in French Guiana of eight Old World taxa during period 2018–24: Common Swift Apus apus, Wood Sandpiper Tringa glareola, Eurasian Whimbrel Numenius phaeopus phaeopus, Audouin's Gull Ichthyaetus audouinii, Purple Heron Ardea purpurea, Squacco Ardeola ralloides, Black Kite Milvus migrans and Yellow-billed M. aegyptius. Most these occur very rarely South America sometimes anywhere New World. Indeed, record is Americas. With discoveries, confirms its high potential for vagrants now American country with second-largest number species. Factors meteorological events that might have led to remarkable observations are discussed.

Language: Английский

Citations

0